/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:03:25,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:03:25,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:03:25,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:03:25,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:03:25,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:03:25,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:03:25,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:03:25,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:03:25,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:03:25,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:03:25,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:03:25,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:03:25,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:03:25,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:03:25,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:03:25,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:03:25,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:03:25,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:03:25,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:03:25,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:03:25,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:03:25,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:03:25,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:03:25,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:03:25,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:03:25,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:03:25,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:03:25,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:03:25,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:03:25,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:03:25,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:03:25,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:03:25,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:03:25,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:03:25,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:03:25,332 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:03:25,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:03:25,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:03:25,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:03:25,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:03:25,396 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:03:25,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:03:25,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:03:25,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:03:25,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:03:25,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:03:25,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:03:25,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:03:25,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:03:25,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:03:25,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:03:25,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:03:25,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:03:25,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:03:25,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:03:25,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:03:25,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:03:25,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:03:25,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:03:25,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:03:25,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:03:25,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:03:25,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:03:25,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:03:25,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:03:25,826 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:03:25,827 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:03:25,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c [2020-12-22 06:03:25,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63d9a9433/ab6dc9e45f9e42e1aa05883aa3963266/FLAG26d51d253 [2020-12-22 06:03:26,746 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:03:26,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c [2020-12-22 06:03:26,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63d9a9433/ab6dc9e45f9e42e1aa05883aa3963266/FLAG26d51d253 [2020-12-22 06:03:26,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63d9a9433/ab6dc9e45f9e42e1aa05883aa3963266 [2020-12-22 06:03:26,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:03:26,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:03:27,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:03:27,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:03:27,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:03:27,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:03:26" (1/1) ... [2020-12-22 06:03:27,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570ef8ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:27, skipping insertion in model container [2020-12-22 06:03:27,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:03:26" (1/1) ... [2020-12-22 06:03:27,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:03:27,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:03:27,271 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c[1221,1234] [2020-12-22 06:03:27,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:03:27,750 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:03:27,765 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product11.cil.c[1221,1234] [2020-12-22 06:03:27,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:03:27,975 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:03:27,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:27 WrapperNode [2020-12-22 06:03:27,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:03:27,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:03:27,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:03:27,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:03:27,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:27" (1/1) ... [2020-12-22 06:03:28,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:27" (1/1) ... [2020-12-22 06:03:28,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:03:28,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:03:28,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:03:28,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:03:28,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:27" (1/1) ... [2020-12-22 06:03:28,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:27" (1/1) ... [2020-12-22 06:03:28,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:27" (1/1) ... [2020-12-22 06:03:28,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:27" (1/1) ... [2020-12-22 06:03:28,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:27" (1/1) ... [2020-12-22 06:03:28,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:27" (1/1) ... [2020-12-22 06:03:28,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:27" (1/1) ... [2020-12-22 06:03:28,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:03:28,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:03:28,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:03:28,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:03:28,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:03:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:03:28,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:03:28,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:03:28,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:03:33,979 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:03:33,980 INFO L299 CfgBuilder]: Removed 565 assume(true) statements. [2020-12-22 06:03:33,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:03:33 BoogieIcfgContainer [2020-12-22 06:03:33,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:03:33,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:03:33,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:03:33,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:03:33,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:03:26" (1/3) ... [2020-12-22 06:03:33,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7395c30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:03:33, skipping insertion in model container [2020-12-22 06:03:33,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:27" (2/3) ... [2020-12-22 06:03:33,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7395c30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:03:33, skipping insertion in model container [2020-12-22 06:03:33,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:03:33" (3/3) ... [2020-12-22 06:03:33,998 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product11.cil.c [2020-12-22 06:03:34,005 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:03:34,011 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:03:34,032 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:03:34,086 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:03:34,086 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:03:34,087 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:03:34,087 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:03:34,087 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:03:34,087 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:03:34,087 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:03:34,087 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:03:34,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states. [2020-12-22 06:03:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 06:03:34,179 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:34,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:34,181 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:34,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:34,189 INFO L82 PathProgramCache]: Analyzing trace with hash -290760884, now seen corresponding path program 1 times [2020-12-22 06:03:34,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:34,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160427440] [2020-12-22 06:03:34,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:34,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160427440] [2020-12-22 06:03:34,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:34,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:34,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033003335] [2020-12-22 06:03:34,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:34,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:34,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:34,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:34,704 INFO L87 Difference]: Start difference. First operand 2412 states. Second operand 3 states. [2020-12-22 06:03:34,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:34,907 INFO L93 Difference]: Finished difference Result 4815 states and 9093 transitions. [2020-12-22 06:03:34,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:34,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 06:03:34,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:34,951 INFO L225 Difference]: With dead ends: 4815 [2020-12-22 06:03:34,952 INFO L226 Difference]: Without dead ends: 2408 [2020-12-22 06:03:34,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:34,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2020-12-22 06:03:35,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2408. [2020-12-22 06:03:35,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2408 states. [2020-12-22 06:03:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 4537 transitions. [2020-12-22 06:03:35,160 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 4537 transitions. Word has length 44 [2020-12-22 06:03:35,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:35,161 INFO L481 AbstractCegarLoop]: Abstraction has 2408 states and 4537 transitions. [2020-12-22 06:03:35,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:35,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 4537 transitions. [2020-12-22 06:03:35,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:03:35,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:35,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:35,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:03:35,170 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:35,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:35,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1144028709, now seen corresponding path program 1 times [2020-12-22 06:03:35,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:35,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394887381] [2020-12-22 06:03:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:35,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394887381] [2020-12-22 06:03:35,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:35,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:03:35,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395412249] [2020-12-22 06:03:35,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:03:35,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:35,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:03:35,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:03:35,375 INFO L87 Difference]: Start difference. First operand 2408 states and 4537 transitions. Second operand 6 states. [2020-12-22 06:03:35,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:35,588 INFO L93 Difference]: Finished difference Result 4767 states and 8990 transitions. [2020-12-22 06:03:35,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:03:35,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-12-22 06:03:35,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:35,604 INFO L225 Difference]: With dead ends: 4767 [2020-12-22 06:03:35,604 INFO L226 Difference]: Without dead ends: 2402 [2020-12-22 06:03:35,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:03:35,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2020-12-22 06:03:35,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 2402. [2020-12-22 06:03:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2402 states. [2020-12-22 06:03:35,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 4524 transitions. [2020-12-22 06:03:35,699 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 4524 transitions. Word has length 51 [2020-12-22 06:03:35,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:35,700 INFO L481 AbstractCegarLoop]: Abstraction has 2402 states and 4524 transitions. [2020-12-22 06:03:35,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:03:35,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 4524 transitions. [2020-12-22 06:03:35,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:03:35,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:35,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:35,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:03:35,711 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:35,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:35,713 INFO L82 PathProgramCache]: Analyzing trace with hash 832146375, now seen corresponding path program 1 times [2020-12-22 06:03:35,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:35,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821116631] [2020-12-22 06:03:35,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:35,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821116631] [2020-12-22 06:03:35,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:35,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:35,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975787696] [2020-12-22 06:03:35,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:35,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:35,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:35,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:35,839 INFO L87 Difference]: Start difference. First operand 2402 states and 4524 transitions. Second operand 4 states. [2020-12-22 06:03:36,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:36,100 INFO L93 Difference]: Finished difference Result 4761 states and 8977 transitions. [2020-12-22 06:03:36,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:36,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 06:03:36,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:36,117 INFO L225 Difference]: With dead ends: 4761 [2020-12-22 06:03:36,118 INFO L226 Difference]: Without dead ends: 2402 [2020-12-22 06:03:36,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:36,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2020-12-22 06:03:36,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 2402. [2020-12-22 06:03:36,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2402 states. [2020-12-22 06:03:36,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 4520 transitions. [2020-12-22 06:03:36,237 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 4520 transitions. Word has length 52 [2020-12-22 06:03:36,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:36,244 INFO L481 AbstractCegarLoop]: Abstraction has 2402 states and 4520 transitions. [2020-12-22 06:03:36,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:36,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 4520 transitions. [2020-12-22 06:03:36,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:03:36,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:36,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:36,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:03:36,250 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:36,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:36,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1234534178, now seen corresponding path program 1 times [2020-12-22 06:03:36,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:36,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131300286] [2020-12-22 06:03:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:36,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131300286] [2020-12-22 06:03:36,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:36,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:36,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142847026] [2020-12-22 06:03:36,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:36,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:36,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:36,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:36,344 INFO L87 Difference]: Start difference. First operand 2402 states and 4520 transitions. Second operand 4 states. [2020-12-22 06:03:36,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:36,543 INFO L93 Difference]: Finished difference Result 4761 states and 8973 transitions. [2020-12-22 06:03:36,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:36,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 06:03:36,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:36,558 INFO L225 Difference]: With dead ends: 4761 [2020-12-22 06:03:36,558 INFO L226 Difference]: Without dead ends: 2402 [2020-12-22 06:03:36,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:36,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2020-12-22 06:03:36,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 2402. [2020-12-22 06:03:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2402 states. [2020-12-22 06:03:36,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 4516 transitions. [2020-12-22 06:03:36,665 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 4516 transitions. Word has length 53 [2020-12-22 06:03:36,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:36,667 INFO L481 AbstractCegarLoop]: Abstraction has 2402 states and 4516 transitions. [2020-12-22 06:03:36,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:36,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 4516 transitions. [2020-12-22 06:03:36,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:03:36,670 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:36,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:36,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:03:36,672 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:36,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:36,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1985220866, now seen corresponding path program 1 times [2020-12-22 06:03:36,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:36,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559100634] [2020-12-22 06:03:36,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:36,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559100634] [2020-12-22 06:03:36,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:36,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:36,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428686052] [2020-12-22 06:03:36,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:36,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:36,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:36,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:36,785 INFO L87 Difference]: Start difference. First operand 2402 states and 4516 transitions. Second operand 4 states. [2020-12-22 06:03:36,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:36,963 INFO L93 Difference]: Finished difference Result 4761 states and 8969 transitions. [2020-12-22 06:03:36,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:36,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 06:03:36,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:36,977 INFO L225 Difference]: With dead ends: 4761 [2020-12-22 06:03:36,977 INFO L226 Difference]: Without dead ends: 2402 [2020-12-22 06:03:36,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:36,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2020-12-22 06:03:37,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 2402. [2020-12-22 06:03:37,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2402 states. [2020-12-22 06:03:37,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 4512 transitions. [2020-12-22 06:03:37,071 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 4512 transitions. Word has length 54 [2020-12-22 06:03:37,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:37,071 INFO L481 AbstractCegarLoop]: Abstraction has 2402 states and 4512 transitions. [2020-12-22 06:03:37,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:37,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 4512 transitions. [2020-12-22 06:03:37,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:03:37,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:37,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:37,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:03:37,076 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:37,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:37,077 INFO L82 PathProgramCache]: Analyzing trace with hash 520012930, now seen corresponding path program 1 times [2020-12-22 06:03:37,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:37,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407817593] [2020-12-22 06:03:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:37,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:37,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407817593] [2020-12-22 06:03:37,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:37,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:37,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547126812] [2020-12-22 06:03:37,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:37,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:37,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:37,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:37,174 INFO L87 Difference]: Start difference. First operand 2402 states and 4512 transitions. Second operand 4 states. [2020-12-22 06:03:37,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:37,354 INFO L93 Difference]: Finished difference Result 4761 states and 8965 transitions. [2020-12-22 06:03:37,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:37,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 06:03:37,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:37,368 INFO L225 Difference]: With dead ends: 4761 [2020-12-22 06:03:37,368 INFO L226 Difference]: Without dead ends: 2381 [2020-12-22 06:03:37,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:37,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-12-22 06:03:37,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2381. [2020-12-22 06:03:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2381 states. [2020-12-22 06:03:37,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 4478 transitions. [2020-12-22 06:03:37,466 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 4478 transitions. Word has length 54 [2020-12-22 06:03:37,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:37,466 INFO L481 AbstractCegarLoop]: Abstraction has 2381 states and 4478 transitions. [2020-12-22 06:03:37,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:37,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 4478 transitions. [2020-12-22 06:03:37,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:03:37,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:37,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:37,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:03:37,469 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:37,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:37,475 INFO L82 PathProgramCache]: Analyzing trace with hash 648271101, now seen corresponding path program 1 times [2020-12-22 06:03:37,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:37,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702693753] [2020-12-22 06:03:37,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:37,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702693753] [2020-12-22 06:03:37,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:37,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:37,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085659713] [2020-12-22 06:03:37,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:37,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:37,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:37,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:37,555 INFO L87 Difference]: Start difference. First operand 2381 states and 4478 transitions. Second operand 4 states. [2020-12-22 06:03:37,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:37,690 INFO L93 Difference]: Finished difference Result 4740 states and 8931 transitions. [2020-12-22 06:03:37,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:37,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-12-22 06:03:37,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:37,704 INFO L225 Difference]: With dead ends: 4740 [2020-12-22 06:03:37,704 INFO L226 Difference]: Without dead ends: 2381 [2020-12-22 06:03:37,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:37,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-12-22 06:03:37,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2381. [2020-12-22 06:03:37,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2381 states. [2020-12-22 06:03:37,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 4477 transitions. [2020-12-22 06:03:37,803 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 4477 transitions. Word has length 55 [2020-12-22 06:03:37,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:37,803 INFO L481 AbstractCegarLoop]: Abstraction has 2381 states and 4477 transitions. [2020-12-22 06:03:37,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:37,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 4477 transitions. [2020-12-22 06:03:37,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:03:37,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:37,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:37,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:03:37,806 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:37,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:37,807 INFO L82 PathProgramCache]: Analyzing trace with hash -980899267, now seen corresponding path program 1 times [2020-12-22 06:03:37,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:37,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751690101] [2020-12-22 06:03:37,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:37,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751690101] [2020-12-22 06:03:37,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:37,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:37,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531202475] [2020-12-22 06:03:37,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:37,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:37,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:37,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:37,899 INFO L87 Difference]: Start difference. First operand 2381 states and 4477 transitions. Second operand 4 states. [2020-12-22 06:03:38,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:38,022 INFO L93 Difference]: Finished difference Result 4740 states and 8930 transitions. [2020-12-22 06:03:38,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:38,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-12-22 06:03:38,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:38,037 INFO L225 Difference]: With dead ends: 4740 [2020-12-22 06:03:38,037 INFO L226 Difference]: Without dead ends: 2381 [2020-12-22 06:03:38,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:38,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-12-22 06:03:38,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2381. [2020-12-22 06:03:38,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2381 states. [2020-12-22 06:03:38,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 4476 transitions. [2020-12-22 06:03:38,137 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 4476 transitions. Word has length 56 [2020-12-22 06:03:38,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:38,138 INFO L481 AbstractCegarLoop]: Abstraction has 2381 states and 4476 transitions. [2020-12-22 06:03:38,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:38,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 4476 transitions. [2020-12-22 06:03:38,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 06:03:38,140 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:38,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:38,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:03:38,141 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:38,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:38,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1215993560, now seen corresponding path program 1 times [2020-12-22 06:03:38,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:38,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166956497] [2020-12-22 06:03:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:38,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166956497] [2020-12-22 06:03:38,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:38,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:03:38,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252544386] [2020-12-22 06:03:38,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:03:38,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:38,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:03:38,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:03:38,229 INFO L87 Difference]: Start difference. First operand 2381 states and 4476 transitions. Second operand 7 states. [2020-12-22 06:03:38,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:38,482 INFO L93 Difference]: Finished difference Result 4734 states and 8918 transitions. [2020-12-22 06:03:38,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:03:38,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-12-22 06:03:38,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:38,495 INFO L225 Difference]: With dead ends: 4734 [2020-12-22 06:03:38,495 INFO L226 Difference]: Without dead ends: 2381 [2020-12-22 06:03:38,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:03:38,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-12-22 06:03:38,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2381. [2020-12-22 06:03:38,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2381 states. [2020-12-22 06:03:38,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 4475 transitions. [2020-12-22 06:03:38,590 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 4475 transitions. Word has length 57 [2020-12-22 06:03:38,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:38,591 INFO L481 AbstractCegarLoop]: Abstraction has 2381 states and 4475 transitions. [2020-12-22 06:03:38,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:03:38,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 4475 transitions. [2020-12-22 06:03:38,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:03:38,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:38,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:38,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:03:38,594 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:38,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:38,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1756855464, now seen corresponding path program 1 times [2020-12-22 06:03:38,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:38,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156022357] [2020-12-22 06:03:38,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:38,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156022357] [2020-12-22 06:03:38,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:38,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:38,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994027952] [2020-12-22 06:03:38,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:38,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:38,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:38,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:38,698 INFO L87 Difference]: Start difference. First operand 2381 states and 4475 transitions. Second operand 4 states. [2020-12-22 06:03:39,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:39,615 INFO L93 Difference]: Finished difference Result 6609 states and 12486 transitions. [2020-12-22 06:03:39,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:39,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-22 06:03:39,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:39,652 INFO L225 Difference]: With dead ends: 6609 [2020-12-22 06:03:39,652 INFO L226 Difference]: Without dead ends: 4262 [2020-12-22 06:03:39,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4262 states. [2020-12-22 06:03:39,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4262 to 2381. [2020-12-22 06:03:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2381 states. [2020-12-22 06:03:39,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 4469 transitions. [2020-12-22 06:03:39,779 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 4469 transitions. Word has length 58 [2020-12-22 06:03:39,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:39,780 INFO L481 AbstractCegarLoop]: Abstraction has 2381 states and 4469 transitions. [2020-12-22 06:03:39,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:39,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 4469 transitions. [2020-12-22 06:03:39,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:03:39,782 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:39,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:39,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:03:39,782 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:39,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:39,783 INFO L82 PathProgramCache]: Analyzing trace with hash -179816380, now seen corresponding path program 1 times [2020-12-22 06:03:39,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:39,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118780670] [2020-12-22 06:03:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:39,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:39,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118780670] [2020-12-22 06:03:39,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:39,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:39,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966705408] [2020-12-22 06:03:39,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:39,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:39,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:39,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:39,906 INFO L87 Difference]: Start difference. First operand 2381 states and 4469 transitions. Second operand 4 states. [2020-12-22 06:03:40,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:40,803 INFO L93 Difference]: Finished difference Result 6609 states and 12475 transitions. [2020-12-22 06:03:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:40,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 06:03:40,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:40,817 INFO L225 Difference]: With dead ends: 6609 [2020-12-22 06:03:40,817 INFO L226 Difference]: Without dead ends: 4262 [2020-12-22 06:03:40,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:40,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4262 states. [2020-12-22 06:03:40,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4262 to 2381. [2020-12-22 06:03:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2381 states. [2020-12-22 06:03:40,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 4463 transitions. [2020-12-22 06:03:40,940 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 4463 transitions. Word has length 60 [2020-12-22 06:03:40,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:40,941 INFO L481 AbstractCegarLoop]: Abstraction has 2381 states and 4463 transitions. [2020-12-22 06:03:40,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:40,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 4463 transitions. [2020-12-22 06:03:40,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 06:03:40,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:40,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:40,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:03:40,944 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:40,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:40,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1318291490, now seen corresponding path program 1 times [2020-12-22 06:03:40,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:40,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448759401] [2020-12-22 06:03:40,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:41,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448759401] [2020-12-22 06:03:41,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:41,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:41,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549018700] [2020-12-22 06:03:41,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:41,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:41,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:41,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:41,019 INFO L87 Difference]: Start difference. First operand 2381 states and 4463 transitions. Second operand 4 states. [2020-12-22 06:03:42,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:42,020 INFO L93 Difference]: Finished difference Result 6609 states and 12464 transitions. [2020-12-22 06:03:42,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:42,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 06:03:42,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:42,033 INFO L225 Difference]: With dead ends: 6609 [2020-12-22 06:03:42,033 INFO L226 Difference]: Without dead ends: 4262 [2020-12-22 06:03:42,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:42,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4262 states. [2020-12-22 06:03:42,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4262 to 2381. [2020-12-22 06:03:42,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2381 states. [2020-12-22 06:03:42,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 4457 transitions. [2020-12-22 06:03:42,176 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 4457 transitions. Word has length 62 [2020-12-22 06:03:42,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:42,176 INFO L481 AbstractCegarLoop]: Abstraction has 2381 states and 4457 transitions. [2020-12-22 06:03:42,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:42,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 4457 transitions. [2020-12-22 06:03:42,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 06:03:42,179 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:42,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:42,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:03:42,180 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:42,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:42,181 INFO L82 PathProgramCache]: Analyzing trace with hash -2074320220, now seen corresponding path program 1 times [2020-12-22 06:03:42,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:42,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659209709] [2020-12-22 06:03:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:42,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659209709] [2020-12-22 06:03:42,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:42,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:42,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980227535] [2020-12-22 06:03:42,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:42,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:42,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:42,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:42,270 INFO L87 Difference]: Start difference. First operand 2381 states and 4457 transitions. Second operand 4 states. [2020-12-22 06:03:43,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:43,206 INFO L93 Difference]: Finished difference Result 6609 states and 12453 transitions. [2020-12-22 06:03:43,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:43,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-22 06:03:43,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:43,219 INFO L225 Difference]: With dead ends: 6609 [2020-12-22 06:03:43,219 INFO L226 Difference]: Without dead ends: 4262 [2020-12-22 06:03:43,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:43,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4262 states. [2020-12-22 06:03:43,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4262 to 2381. [2020-12-22 06:03:43,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2381 states. [2020-12-22 06:03:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 4451 transitions. [2020-12-22 06:03:43,329 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 4451 transitions. Word has length 64 [2020-12-22 06:03:43,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:43,329 INFO L481 AbstractCegarLoop]: Abstraction has 2381 states and 4451 transitions. [2020-12-22 06:03:43,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:43,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 4451 transitions. [2020-12-22 06:03:43,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:03:43,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:43,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:43,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:03:43,332 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:43,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:43,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1621494380, now seen corresponding path program 1 times [2020-12-22 06:03:43,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:43,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779181583] [2020-12-22 06:03:43,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:43,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779181583] [2020-12-22 06:03:43,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:43,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:03:43,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827351702] [2020-12-22 06:03:43,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:43,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:43,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:43,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:43,396 INFO L87 Difference]: Start difference. First operand 2381 states and 4451 transitions. Second operand 3 states. [2020-12-22 06:03:43,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:43,834 INFO L93 Difference]: Finished difference Result 4840 states and 9026 transitions. [2020-12-22 06:03:43,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:43,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 06:03:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:43,843 INFO L225 Difference]: With dead ends: 4840 [2020-12-22 06:03:43,843 INFO L226 Difference]: Without dead ends: 3332 [2020-12-22 06:03:43,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:43,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2020-12-22 06:03:43,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 3308. [2020-12-22 06:03:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3308 states. [2020-12-22 06:03:43,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 6133 transitions. [2020-12-22 06:03:43,977 INFO L78 Accepts]: Start accepts. Automaton has 3308 states and 6133 transitions. Word has length 66 [2020-12-22 06:03:43,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:43,977 INFO L481 AbstractCegarLoop]: Abstraction has 3308 states and 6133 transitions. [2020-12-22 06:03:43,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:43,978 INFO L276 IsEmpty]: Start isEmpty. Operand 3308 states and 6133 transitions. [2020-12-22 06:03:43,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:03:43,980 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:43,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:43,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:03:43,980 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:43,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:43,981 INFO L82 PathProgramCache]: Analyzing trace with hash -610377130, now seen corresponding path program 1 times [2020-12-22 06:03:43,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:43,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066450844] [2020-12-22 06:03:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:44,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066450844] [2020-12-22 06:03:44,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:44,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:44,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468462578] [2020-12-22 06:03:44,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:44,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:44,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:44,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:44,053 INFO L87 Difference]: Start difference. First operand 3308 states and 6133 transitions. Second operand 3 states. [2020-12-22 06:03:44,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:44,300 INFO L93 Difference]: Finished difference Result 8400 states and 15663 transitions. [2020-12-22 06:03:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:44,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 06:03:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:44,316 INFO L225 Difference]: With dead ends: 8400 [2020-12-22 06:03:44,316 INFO L226 Difference]: Without dead ends: 6110 [2020-12-22 06:03:44,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:44,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6110 states. [2020-12-22 06:03:44,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6110 to 6110. [2020-12-22 06:03:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6110 states. [2020-12-22 06:03:44,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6110 states to 6110 states and 11398 transitions. [2020-12-22 06:03:44,565 INFO L78 Accepts]: Start accepts. Automaton has 6110 states and 11398 transitions. Word has length 66 [2020-12-22 06:03:44,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:44,566 INFO L481 AbstractCegarLoop]: Abstraction has 6110 states and 11398 transitions. [2020-12-22 06:03:44,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:44,566 INFO L276 IsEmpty]: Start isEmpty. Operand 6110 states and 11398 transitions. [2020-12-22 06:03:44,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:03:44,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:44,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:44,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:03:44,569 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:44,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:44,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1344930565, now seen corresponding path program 1 times [2020-12-22 06:03:44,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:44,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759122050] [2020-12-22 06:03:44,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:44,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759122050] [2020-12-22 06:03:44,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:44,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:44,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434494815] [2020-12-22 06:03:44,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:44,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:44,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:44,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:44,666 INFO L87 Difference]: Start difference. First operand 6110 states and 11398 transitions. Second operand 3 states. [2020-12-22 06:03:45,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:45,128 INFO L93 Difference]: Finished difference Result 16139 states and 30174 transitions. [2020-12-22 06:03:45,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:45,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 06:03:45,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:45,155 INFO L225 Difference]: With dead ends: 16139 [2020-12-22 06:03:45,155 INFO L226 Difference]: Without dead ends: 11608 [2020-12-22 06:03:45,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:45,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11608 states. [2020-12-22 06:03:45,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11608 to 11606. [2020-12-22 06:03:45,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11606 states. [2020-12-22 06:03:45,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11606 states to 11606 states and 21719 transitions. [2020-12-22 06:03:45,583 INFO L78 Accepts]: Start accepts. Automaton has 11606 states and 21719 transitions. Word has length 68 [2020-12-22 06:03:45,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:45,584 INFO L481 AbstractCegarLoop]: Abstraction has 11606 states and 21719 transitions. [2020-12-22 06:03:45,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:45,584 INFO L276 IsEmpty]: Start isEmpty. Operand 11606 states and 21719 transitions. [2020-12-22 06:03:45,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:03:45,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:45,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:45,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:03:45,587 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:45,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:45,587 INFO L82 PathProgramCache]: Analyzing trace with hash 72240446, now seen corresponding path program 1 times [2020-12-22 06:03:45,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:45,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861311855] [2020-12-22 06:03:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:45,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:45,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861311855] [2020-12-22 06:03:45,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:45,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:45,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523553134] [2020-12-22 06:03:45,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:45,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:45,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:45,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:45,651 INFO L87 Difference]: Start difference. First operand 11606 states and 21719 transitions. Second operand 3 states. [2020-12-22 06:03:46,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:46,562 INFO L93 Difference]: Finished difference Result 31389 states and 58758 transitions. [2020-12-22 06:03:46,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:46,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 06:03:46,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:46,627 INFO L225 Difference]: With dead ends: 31389 [2020-12-22 06:03:46,627 INFO L226 Difference]: Without dead ends: 22383 [2020-12-22 06:03:46,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:46,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22383 states. [2020-12-22 06:03:47,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22383 to 22379. [2020-12-22 06:03:47,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22379 states. [2020-12-22 06:03:47,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22379 states to 22379 states and 41937 transitions. [2020-12-22 06:03:47,650 INFO L78 Accepts]: Start accepts. Automaton has 22379 states and 41937 transitions. Word has length 69 [2020-12-22 06:03:47,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:47,650 INFO L481 AbstractCegarLoop]: Abstraction has 22379 states and 41937 transitions. [2020-12-22 06:03:47,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:47,650 INFO L276 IsEmpty]: Start isEmpty. Operand 22379 states and 41937 transitions. [2020-12-22 06:03:47,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:03:47,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:47,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:47,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:03:47,654 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:47,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:47,655 INFO L82 PathProgramCache]: Analyzing trace with hash -2055495902, now seen corresponding path program 1 times [2020-12-22 06:03:47,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:47,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503038379] [2020-12-22 06:03:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:47,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:47,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503038379] [2020-12-22 06:03:47,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:47,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:47,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116459313] [2020-12-22 06:03:47,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:47,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:47,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:47,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:47,740 INFO L87 Difference]: Start difference. First operand 22379 states and 41937 transitions. Second operand 3 states. [2020-12-22 06:03:49,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:49,077 INFO L93 Difference]: Finished difference Result 61427 states and 115036 transitions. [2020-12-22 06:03:49,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:49,077 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 06:03:49,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:49,172 INFO L225 Difference]: With dead ends: 61427 [2020-12-22 06:03:49,172 INFO L226 Difference]: Without dead ends: 43490 [2020-12-22 06:03:49,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:49,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43490 states. [2020-12-22 06:03:51,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43490 to 43484. [2020-12-22 06:03:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43484 states. [2020-12-22 06:03:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43484 states to 43484 states and 81519 transitions. [2020-12-22 06:03:51,202 INFO L78 Accepts]: Start accepts. Automaton has 43484 states and 81519 transitions. Word has length 70 [2020-12-22 06:03:51,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:51,203 INFO L481 AbstractCegarLoop]: Abstraction has 43484 states and 81519 transitions. [2020-12-22 06:03:51,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:51,203 INFO L276 IsEmpty]: Start isEmpty. Operand 43484 states and 81519 transitions. [2020-12-22 06:03:51,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:03:51,206 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:51,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:51,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:03:51,207 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:51,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:51,208 INFO L82 PathProgramCache]: Analyzing trace with hash 704154055, now seen corresponding path program 1 times [2020-12-22 06:03:51,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:51,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717612064] [2020-12-22 06:03:51,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:51,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717612064] [2020-12-22 06:03:51,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:51,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:51,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271002844] [2020-12-22 06:03:51,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:51,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:51,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:51,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:51,289 INFO L87 Difference]: Start difference. First operand 43484 states and 81519 transitions. Second operand 3 states. [2020-12-22 06:03:53,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:53,428 INFO L93 Difference]: Finished difference Result 120573 states and 225797 transitions. [2020-12-22 06:03:53,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:53,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 06:03:53,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:53,589 INFO L225 Difference]: With dead ends: 120573 [2020-12-22 06:03:53,589 INFO L226 Difference]: Without dead ends: 84812 [2020-12-22 06:03:53,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:53,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84812 states. [2020-12-22 06:03:56,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84812 to 84804. [2020-12-22 06:03:56,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84804 states. [2020-12-22 06:03:56,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84804 states to 84804 states and 158954 transitions. [2020-12-22 06:03:56,490 INFO L78 Accepts]: Start accepts. Automaton has 84804 states and 158954 transitions. Word has length 71 [2020-12-22 06:03:56,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:56,490 INFO L481 AbstractCegarLoop]: Abstraction has 84804 states and 158954 transitions. [2020-12-22 06:03:56,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:56,490 INFO L276 IsEmpty]: Start isEmpty. Operand 84804 states and 158954 transitions. [2020-12-22 06:03:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 06:03:56,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:56,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:56,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:03:56,513 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:56,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:56,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1921622606, now seen corresponding path program 1 times [2020-12-22 06:03:56,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:56,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481767772] [2020-12-22 06:03:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:56,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:56,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481767772] [2020-12-22 06:03:56,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:56,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:56,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509599476] [2020-12-22 06:03:56,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:56,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:56,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:56,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:56,591 INFO L87 Difference]: Start difference. First operand 84804 states and 158954 transitions. Second operand 4 states. [2020-12-22 06:03:59,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:59,840 INFO L93 Difference]: Finished difference Result 188073 states and 350233 transitions. [2020-12-22 06:03:59,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:59,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-12-22 06:03:59,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:00,172 INFO L225 Difference]: With dead ends: 188073 [2020-12-22 06:04:00,172 INFO L226 Difference]: Without dead ends: 103506 [2020-12-22 06:04:00,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:00,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103506 states. [2020-12-22 06:04:03,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103506 to 84934. [2020-12-22 06:04:03,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84934 states. [2020-12-22 06:04:03,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84934 states to 84934 states and 159084 transitions. [2020-12-22 06:04:03,287 INFO L78 Accepts]: Start accepts. Automaton has 84934 states and 159084 transitions. Word has length 102 [2020-12-22 06:04:03,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:03,287 INFO L481 AbstractCegarLoop]: Abstraction has 84934 states and 159084 transitions. [2020-12-22 06:04:03,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:03,287 INFO L276 IsEmpty]: Start isEmpty. Operand 84934 states and 159084 transitions. [2020-12-22 06:04:03,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 06:04:03,307 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:03,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:03,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:04:03,307 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:03,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:03,308 INFO L82 PathProgramCache]: Analyzing trace with hash -756118418, now seen corresponding path program 1 times [2020-12-22 06:04:03,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:03,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782394329] [2020-12-22 06:04:03,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:03,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782394329] [2020-12-22 06:04:03,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:03,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:04:03,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753971757] [2020-12-22 06:04:03,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:03,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:03,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:03,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:03,394 INFO L87 Difference]: Start difference. First operand 84934 states and 159084 transitions. Second operand 5 states. [2020-12-22 06:04:11,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:11,817 INFO L93 Difference]: Finished difference Result 341447 states and 636879 transitions. [2020-12-22 06:04:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:04:11,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-12-22 06:04:11,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:12,290 INFO L225 Difference]: With dead ends: 341447 [2020-12-22 06:04:12,291 INFO L226 Difference]: Without dead ends: 256582 [2020-12-22 06:04:12,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:04:12,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256582 states. [2020-12-22 06:04:16,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256582 to 85194. [2020-12-22 06:04:16,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85194 states. [2020-12-22 06:04:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85194 states to 85194 states and 159344 transitions. [2020-12-22 06:04:16,703 INFO L78 Accepts]: Start accepts. Automaton has 85194 states and 159344 transitions. Word has length 104 [2020-12-22 06:04:16,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:16,703 INFO L481 AbstractCegarLoop]: Abstraction has 85194 states and 159344 transitions. [2020-12-22 06:04:16,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:16,703 INFO L276 IsEmpty]: Start isEmpty. Operand 85194 states and 159344 transitions. [2020-12-22 06:04:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 06:04:16,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:16,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:16,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:04:16,725 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:16,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:16,726 INFO L82 PathProgramCache]: Analyzing trace with hash -305155431, now seen corresponding path program 1 times [2020-12-22 06:04:16,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:16,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248328301] [2020-12-22 06:04:16,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:16,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:16,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248328301] [2020-12-22 06:04:16,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:16,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:16,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146775829] [2020-12-22 06:04:16,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:16,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:16,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:16,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:16,820 INFO L87 Difference]: Start difference. First operand 85194 states and 159344 transitions. Second operand 4 states. [2020-12-22 06:04:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:20,975 INFO L93 Difference]: Finished difference Result 175269 states and 327594 transitions. [2020-12-22 06:04:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:20,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-22 06:04:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:21,118 INFO L225 Difference]: With dead ends: 175269 [2020-12-22 06:04:21,118 INFO L226 Difference]: Without dead ends: 90130 [2020-12-22 06:04:21,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:21,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90130 states. [2020-12-22 06:04:24,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90130 to 85194. [2020-12-22 06:04:24,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85194 states. [2020-12-22 06:04:24,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85194 states to 85194 states and 159278 transitions. [2020-12-22 06:04:24,247 INFO L78 Accepts]: Start accepts. Automaton has 85194 states and 159278 transitions. Word has length 105 [2020-12-22 06:04:24,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:24,248 INFO L481 AbstractCegarLoop]: Abstraction has 85194 states and 159278 transitions. [2020-12-22 06:04:24,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:24,248 INFO L276 IsEmpty]: Start isEmpty. Operand 85194 states and 159278 transitions. [2020-12-22 06:04:24,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 06:04:24,259 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:24,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:24,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:04:24,260 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:24,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:24,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1265972457, now seen corresponding path program 1 times [2020-12-22 06:04:24,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:24,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113038453] [2020-12-22 06:04:24,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:24,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:24,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113038453] [2020-12-22 06:04:24,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:24,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:24,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678899768] [2020-12-22 06:04:24,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:24,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:24,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:24,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:24,396 INFO L87 Difference]: Start difference. First operand 85194 states and 159278 transitions. Second operand 4 states. [2020-12-22 06:04:28,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:28,554 INFO L93 Difference]: Finished difference Result 175269 states and 327464 transitions. [2020-12-22 06:04:28,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:28,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-12-22 06:04:28,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:28,690 INFO L225 Difference]: With dead ends: 175269 [2020-12-22 06:04:28,690 INFO L226 Difference]: Without dead ends: 90130 [2020-12-22 06:04:28,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:28,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90130 states. [2020-12-22 06:04:31,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90130 to 85194. [2020-12-22 06:04:31,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85194 states. [2020-12-22 06:04:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85194 states to 85194 states and 159212 transitions. [2020-12-22 06:04:31,837 INFO L78 Accepts]: Start accepts. Automaton has 85194 states and 159212 transitions. Word has length 106 [2020-12-22 06:04:31,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:31,837 INFO L481 AbstractCegarLoop]: Abstraction has 85194 states and 159212 transitions. [2020-12-22 06:04:31,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:31,837 INFO L276 IsEmpty]: Start isEmpty. Operand 85194 states and 159212 transitions. [2020-12-22 06:04:31,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 06:04:31,849 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:31,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:31,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:04:31,850 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:31,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:31,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1820254817, now seen corresponding path program 1 times [2020-12-22 06:04:31,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:31,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988345300] [2020-12-22 06:04:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:32,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:32,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988345300] [2020-12-22 06:04:32,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:32,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:04:32,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210092542] [2020-12-22 06:04:32,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:32,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:32,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:32,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:32,102 INFO L87 Difference]: Start difference. First operand 85194 states and 159212 transitions. Second operand 5 states. [2020-12-22 06:04:50,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:50,347 INFO L93 Difference]: Finished difference Result 720379 states and 1346844 transitions. [2020-12-22 06:04:50,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:04:50,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-12-22 06:04:50,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:51,896 INFO L225 Difference]: With dead ends: 720379 [2020-12-22 06:04:51,897 INFO L226 Difference]: Without dead ends: 635258 [2020-12-22 06:04:52,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:04:52,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635258 states. [2020-12-22 06:05:02,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635258 to 168279. [2020-12-22 06:05:02,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168279 states. [2020-12-22 06:05:03,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168279 states to 168279 states and 313939 transitions. [2020-12-22 06:05:03,619 INFO L78 Accepts]: Start accepts. Automaton has 168279 states and 313939 transitions. Word has length 107 [2020-12-22 06:05:03,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:03,619 INFO L481 AbstractCegarLoop]: Abstraction has 168279 states and 313939 transitions. [2020-12-22 06:05:03,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:03,620 INFO L276 IsEmpty]: Start isEmpty. Operand 168279 states and 313939 transitions. [2020-12-22 06:05:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 06:05:03,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:03,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:03,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:05:03,660 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:05:03,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:03,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1520772321, now seen corresponding path program 1 times [2020-12-22 06:05:03,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:03,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211680817] [2020-12-22 06:05:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:03,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:03,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211680817] [2020-12-22 06:05:03,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:03,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:05:03,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223941201] [2020-12-22 06:05:03,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:03,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:03,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:03,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:03,759 INFO L87 Difference]: Start difference. First operand 168279 states and 313939 transitions. Second operand 5 states. [2020-12-22 06:05:15,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:15,704 INFO L93 Difference]: Finished difference Result 403856 states and 744668 transitions. [2020-12-22 06:05:15,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:05:15,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-12-22 06:05:15,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:16,193 INFO L225 Difference]: With dead ends: 403856 [2020-12-22 06:05:16,193 INFO L226 Difference]: Without dead ends: 235824 [2020-12-22 06:05:16,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:05:16,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235824 states. [2020-12-22 06:05:23,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235824 to 168537. [2020-12-22 06:05:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168537 states. [2020-12-22 06:05:24,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168537 states to 168537 states and 314197 transitions. [2020-12-22 06:05:24,045 INFO L78 Accepts]: Start accepts. Automaton has 168537 states and 314197 transitions. Word has length 107 [2020-12-22 06:05:24,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:24,045 INFO L481 AbstractCegarLoop]: Abstraction has 168537 states and 314197 transitions. [2020-12-22 06:05:24,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:24,045 INFO L276 IsEmpty]: Start isEmpty. Operand 168537 states and 314197 transitions. [2020-12-22 06:05:24,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 06:05:24,059 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:24,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:24,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:05:24,060 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:05:24,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:24,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1092493388, now seen corresponding path program 1 times [2020-12-22 06:05:24,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:24,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144118957] [2020-12-22 06:05:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:24,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:24,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144118957] [2020-12-22 06:05:24,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:24,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:05:24,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146731398] [2020-12-22 06:05:24,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:05:24,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:24,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:05:24,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:24,168 INFO L87 Difference]: Start difference. First operand 168537 states and 314197 transitions. Second operand 4 states. [2020-12-22 06:05:32,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:32,979 INFO L93 Difference]: Finished difference Result 346887 states and 646172 transitions. [2020-12-22 06:05:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:05:32,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-12-22 06:05:32,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:33,324 INFO L225 Difference]: With dead ends: 346887 [2020-12-22 06:05:33,324 INFO L226 Difference]: Without dead ends: 178403 [2020-12-22 06:05:33,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:05:33,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178403 states. [2020-12-22 06:05:40,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178403 to 168537. [2020-12-22 06:05:40,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168537 states. [2020-12-22 06:05:40,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168537 states to 168537 states and 314067 transitions. [2020-12-22 06:05:40,472 INFO L78 Accepts]: Start accepts. Automaton has 168537 states and 314067 transitions. Word has length 107 [2020-12-22 06:05:40,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:40,473 INFO L481 AbstractCegarLoop]: Abstraction has 168537 states and 314067 transitions. [2020-12-22 06:05:40,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:05:40,473 INFO L276 IsEmpty]: Start isEmpty. Operand 168537 states and 314067 transitions. [2020-12-22 06:05:40,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 06:05:40,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:40,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:40,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:05:40,490 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:05:40,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:40,490 INFO L82 PathProgramCache]: Analyzing trace with hash 336176870, now seen corresponding path program 1 times [2020-12-22 06:05:40,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:40,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665389851] [2020-12-22 06:05:40,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:40,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665389851] [2020-12-22 06:05:40,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:40,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:05:40,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234782072] [2020-12-22 06:05:40,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:40,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:40,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:40,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:40,559 INFO L87 Difference]: Start difference. First operand 168537 states and 314067 transitions. Second operand 5 states. [2020-12-22 06:05:53,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:53,744 INFO L93 Difference]: Finished difference Result 409281 states and 757052 transitions. [2020-12-22 06:05:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:05:53,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-12-22 06:05:53,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:54,217 INFO L225 Difference]: With dead ends: 409281 [2020-12-22 06:05:54,218 INFO L226 Difference]: Without dead ends: 240785 [2020-12-22 06:05:54,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:05:54,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240785 states. [2020-12-22 06:06:01,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240785 to 139616. [2020-12-22 06:06:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139616 states. [2020-12-22 06:06:01,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139616 states to 139616 states and 259092 transitions. [2020-12-22 06:06:01,584 INFO L78 Accepts]: Start accepts. Automaton has 139616 states and 259092 transitions. Word has length 108 [2020-12-22 06:06:01,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:01,584 INFO L481 AbstractCegarLoop]: Abstraction has 139616 states and 259092 transitions. [2020-12-22 06:06:01,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:06:01,584 INFO L276 IsEmpty]: Start isEmpty. Operand 139616 states and 259092 transitions. [2020-12-22 06:06:01,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 06:06:01,604 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:01,605 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:01,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 06:06:01,605 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:01,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:01,606 INFO L82 PathProgramCache]: Analyzing trace with hash -2055425111, now seen corresponding path program 1 times [2020-12-22 06:06:01,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:01,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121555557] [2020-12-22 06:06:01,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:01,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:06:01,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121555557] [2020-12-22 06:06:01,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:01,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:06:01,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518800511] [2020-12-22 06:06:01,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:06:01,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:01,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:06:01,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:06:01,758 INFO L87 Difference]: Start difference. First operand 139616 states and 259092 transitions. Second operand 5 states. [2020-12-22 06:06:20,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:20,151 INFO L93 Difference]: Finished difference Result 559559 states and 1036393 transitions. [2020-12-22 06:06:20,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:06:20,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-12-22 06:06:20,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:21,056 INFO L225 Difference]: With dead ends: 559559 [2020-12-22 06:06:21,057 INFO L226 Difference]: Without dead ends: 420164 [2020-12-22 06:06:21,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:06:21,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420164 states. [2020-12-22 06:06:32,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420164 to 139744. [2020-12-22 06:06:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139744 states. [2020-12-22 06:06:32,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139744 states to 139744 states and 259156 transitions. [2020-12-22 06:06:32,442 INFO L78 Accepts]: Start accepts. Automaton has 139744 states and 259156 transitions. Word has length 153 [2020-12-22 06:06:32,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:32,442 INFO L481 AbstractCegarLoop]: Abstraction has 139744 states and 259156 transitions. [2020-12-22 06:06:32,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:06:32,443 INFO L276 IsEmpty]: Start isEmpty. Operand 139744 states and 259156 transitions. [2020-12-22 06:06:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 06:06:32,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:32,469 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:32,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 06:06:32,469 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:32,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1564774060, now seen corresponding path program 1 times [2020-12-22 06:06:32,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:32,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438849242] [2020-12-22 06:06:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:06:32,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438849242] [2020-12-22 06:06:32,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:32,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:32,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954532464] [2020-12-22 06:06:32,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:32,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:32,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:32,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:32,552 INFO L87 Difference]: Start difference. First operand 139744 states and 259156 transitions. Second operand 3 states. [2020-12-22 06:06:41,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:41,731 INFO L93 Difference]: Finished difference Result 294660 states and 543681 transitions. [2020-12-22 06:06:41,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:06:41,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-12-22 06:06:41,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:42,021 INFO L225 Difference]: With dead ends: 294660 [2020-12-22 06:06:42,021 INFO L226 Difference]: Without dead ends: 155137 [2020-12-22 06:06:42,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:42,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155137 states. [2020-12-22 06:06:48,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155137 to 138336. [2020-12-22 06:06:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138336 states. [2020-12-22 06:06:48,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138336 states to 138336 states and 256084 transitions. [2020-12-22 06:06:48,982 INFO L78 Accepts]: Start accepts. Automaton has 138336 states and 256084 transitions. Word has length 154 [2020-12-22 06:06:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:48,984 INFO L481 AbstractCegarLoop]: Abstraction has 138336 states and 256084 transitions. [2020-12-22 06:06:48,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:06:48,985 INFO L276 IsEmpty]: Start isEmpty. Operand 138336 states and 256084 transitions. [2020-12-22 06:06:49,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 06:06:49,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:49,001 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:49,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 06:06:49,001 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:06:49,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:49,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1309943377, now seen corresponding path program 1 times [2020-12-22 06:06:49,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:49,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705578981] [2020-12-22 06:06:49,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:06:49,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705578981] [2020-12-22 06:06:49,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:49,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:06:49,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791080948] [2020-12-22 06:06:49,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:06:49,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:49,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:06:49,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:06:49,093 INFO L87 Difference]: Start difference. First operand 138336 states and 256084 transitions. Second operand 5 states.